Consciousness, Subconsciousness, and Related Concepts

“How,” asks Jean-Paul Sartre, “can we conceive of a knowledge which is ignorant of itself?” He answers his rhetorical question with the declaration that, “all knowing is consciousness of knowing,” and, earlier, he asserts as obvious that “To know is to be conscious of knowing.” 1 Indeed, if most people were to reflect on such matters it would be equally obvious to them, for one cannot reflect on one’s knowledge without knowing that one knows; and one would have no need of a term for “knowing” if one did not know of knowing.